Fuji SC-N12 Coil DC100-120V AC100-127V 50/60Hz 2NO+2NC Magnetic Contactor

Fuji SC-N12 Coil DC100-120V AC100-127V 50/60Hz 2NO+2NC Magnetic Contactor

1. Overview of the Fuji SC-N12

The Fuji SC-N12 is a high-current AC contactor designed for heavy-duty operation, with a rated operating current of up to 400 A and an AC-3 electrical lifespan exceeding 1.5 million cycles. Its integrated IC super magnet and wide-voltage coil design ensures stable engagement even when the grid voltage drops to 65% of the rated value, eliminating the risk of coil burnout and contact welding. A built-in surge absorber enables universal AC/DC power supply, significantly reducing operating power consumption and noise.

Modular accessories offer nearly unlimited expansion possibilities for the SC-N12: front- or side-mounted auxiliary contact units, air delay contacts, mechanical interlock components, and a standalone thermal overload relay. These components enable flexible configuration of reversing, star-delta, or interlocked starting solutions, easily meeting the remote connection and disconnection and frequent starting requirements of three-phase motors up to 110 kW. Compact DIN rail mounting structure, -5°C to +40°C wide operating temperature range, and no derating at an altitude of 2000 m allow for plug-and-play installation during PDC upgrades or on-site retrofits.

2. Core Features:

[Core Parameters]
• Model: SC-N12 (SC Series)
• Rated Operating Current: 400 A (AC-3, 380/400 V)
• Rated Operating Voltage: AC 220/230 V 50/60 Hz, AC 380/400 V 50/60 Hz, DC 110 V / DC 220 V Universal Coil Available
• Rated Insulation Voltage Ui: 690 V
• Rated Impulse Withstand Voltage Uimp: 6 kV
• Conventional Thermal Current Ith: 400 A (≤40°C)
• Rated Control Power Pe (AC-3): 110 kW (380/400 V)
• Electrical Life: ≥ 2 million operations (AC-3, 380/400 V)
• Mechanical Life: ≥ 10 million operations
• Operating Time: 43-49 ms for pull-in, 43-49 ms for release 41-47 ms
• Operating voltage range: 0.85-1.1 µs (closed), 0.2-0.75 µs (released) (50/60 Hz)
• Coil power consumption: 280 VA (closed), 5 W (holding); DC holding power consumption as low as 3.4 W
• Mounting: 35 mm DIN rail or screw base
• Dimensions: 172 × 156 × 360 mm (W × H × D)
• Weight: Approximately 9 kg
• Protection rating: IP20 (IP2X with terminal covers installed)
• Certifications: IEC / EN / VDE / UL / CSA / CCC / CE

[Main Features]
High current carrying capacity: Single-pole 400 A continuous output, capable of directly controlling a 110 kW three-phase asynchronous motor. Ultra-Wide Coil Voltage Range: This universal AC/DC coil maintains reliable engagement even when voltage drops to 65% of the rated value, effectively preventing coil burnout or contact welding caused by power grid fluctuations.
Built-in Surge Suppression: An integrated varistor and RC snubber circuit suppress overvoltage during coil shutdown, protecting PLCs and electronic components.
Dual Auxiliary Contacts: Standard configuration includes 2 NO and 2 NC (2A2B) gold-plated silver alloy auxiliary contacts with a minimum conduction capacity of 5 V / 3 mA, compatible with PLC and microprocessor signals.
Modular Expansion: Accessories such as front and side auxiliary contact blocks, air delay contacts, mechanical interlocks, and thermal relays can be added to easily implement complex control systems such as reversing, star-delta, and interlocked starting.
Fast Response: Engagement time ≤ 49 ms, release time ≤ 47 ms, suitable for high-frequency switching applications.
Low Power Consumption and Quiet: IC-controlled super electromagnet (AC input / DC excitation) technology provides low operating noise, minimal coil temperature rise, and significant energy savings.

[Typical Applications]
• Direct-on-line starting, reversible operation, and star-delta step-down starting of high-power motors
• Inverter bypass and soft starter bypass
• Switching high-current loads such as heating equipment, resistance furnaces, and electrolytic cells
• Industrial applications such as power distribution systems, machine tools, lifting machinery, fans, and pumps

3. Product details pictures

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